diff options
| author | Huang Rui <ray.huang@amd.com> | 2014-10-28 14:54:31 +0300 |
|---|---|---|
| committer | Felipe Balbi <balbi@ti.com> | 2014-11-03 19:03:37 +0300 |
| commit | 41c06ffdf9cc63edd875cc8ff8ae002cd9b14f96 (patch) | |
| tree | 5b0b161153620e1ab3fbe35ff14631794be3dd6e /drivers/usb/dwc3 | |
| parent | a2a1d0f5838d6aa0d1306ef9bb1011f501faa695 (diff) | |
| download | linux-41c06ffdf9cc63edd875cc8ff8ae002cd9b14f96.tar.xz | |
usb: dwc3: add delay phy power change quirk
This patch adds delay PHY power change from P0 to P1/P2/P3 when link state
changing from U0 to U1/U2/U3 respectively, and some special platforms can
configure that if it is needed.
[ balbi@ti.com : added DeviceTree binding documentation ]
Signed-off-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/usb/dwc3')
| -rw-r--r-- | drivers/usb/dwc3/core.c | 6 | ||||
| -rw-r--r-- | drivers/usb/dwc3/core.h | 3 | ||||
| -rw-r--r-- | drivers/usb/dwc3/platform_data.h | 1 |
3 files changed, 10 insertions, 0 deletions
diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index c07651484c60..de6a00969bc7 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -383,6 +383,9 @@ static void dwc3_phy_setup(struct dwc3 *dwc) if (dwc->del_p1p2p3_quirk) reg |= DWC3_GUSB3PIPECTL_DEP1P2P3_EN; + if (dwc->del_phy_power_chg_quirk) + reg |= DWC3_GUSB3PIPECTL_DEPOCHANGE; + dwc3_writel(dwc->regs, DWC3_GUSB3PIPECTL(0), reg); mdelay(100); @@ -766,6 +769,8 @@ static int dwc3_probe(struct platform_device *pdev) "snps,req_p1p2p3_quirk"); dwc->del_p1p2p3_quirk = of_property_read_bool(node, "snps,del_p1p2p3_quirk"); + dwc->del_phy_power_chg_quirk = of_property_read_bool(node, + "snps,del_phy_power_chg_quirk"); } else if (pdata) { dwc->maximum_speed = pdata->maximum_speed; dwc->has_lpm_erratum = pdata->has_lpm_erratum; @@ -780,6 +785,7 @@ static int dwc3_probe(struct platform_device *pdev) dwc->u2ss_inp3_quirk = pdata->u2ss_inp3_quirk; dwc->req_p1p2p3_quirk = pdata->req_p1p2p3_quirk; dwc->del_p1p2p3_quirk = pdata->del_p1p2p3_quirk; + dwc->del_phy_power_chg_quirk = pdata->del_phy_power_chg_quirk; } /* default to superspeed if no maximum_speed passed */ diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index b8fbc4a1ee4a..5e8a75c3f3c8 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -181,6 +181,7 @@ #define DWC3_GUSB3PIPECTL_DEP1P2P3(n) ((n) << 19) #define DWC3_GUSB3PIPECTL_DEP1P2P3_MASK DWC3_GUSB3PIPECTL_DEP1P2P3(7) #define DWC3_GUSB3PIPECTL_DEP1P2P3_EN DWC3_GUSB3PIPECTL_DEP1P2P3(1) +#define DWC3_GUSB3PIPECTL_DEPOCHANGE (1 << 18) #define DWC3_GUSB3PIPECTL_SUSPHY (1 << 17) /* Global TX Fifo Size Register */ @@ -689,6 +690,7 @@ struct dwc3_scratchpad_array { * @u2ss_inp3_quirk: set if we enable P3 OK for U2/SS Inactive quirk * @req_p1p2p3_quirk: set if we enable request p1p2p3 quirk * @del_p1p2p3_quirk: set if we enable delay p1p2p3 quirk + * @del_phy_power_chg_quirk: set if we enable delay phy power change quirk */ struct dwc3 { struct usb_ctrlrequest *ctrl_req; @@ -801,6 +803,7 @@ struct dwc3 { unsigned u2ss_inp3_quirk:1; unsigned req_p1p2p3_quirk:1; unsigned del_p1p2p3_quirk:1; + unsigned del_phy_power_chg_quirk:1; }; /* -------------------------------------------------------------------------- */ diff --git a/drivers/usb/dwc3/platform_data.h b/drivers/usb/dwc3/platform_data.h index a421cecd6c16..ae67151dc870 100644 --- a/drivers/usb/dwc3/platform_data.h +++ b/drivers/usb/dwc3/platform_data.h @@ -33,4 +33,5 @@ struct dwc3_platform_data { unsigned u2ss_inp3_quirk:1; unsigned req_p1p2p3_quirk:1; unsigned del_p1p2p3_quirk:1; + unsigned del_phy_power_chg_quirk:1; }; |